Dephasing in (Ga,Mn)As nanowires and rings

Wagner, Konrad and Neumaier, D. and Reinwald, M. and Wegscheider, Werner and Weiss, Dieter (2006) Dephasing in (Ga,Mn)As nanowires and rings. PHYSICAL REVIEW LETTERS, 97 (5): 056803. ISSN 0031-9007,

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Abstract

To understand quantum mechanical transport in a ferromagnetic semiconductor, the knowledge of basic material properties such as the phase coherence length and corresponding dephasing mechanism are indispensable ingredients. The lack of observable quantum phenomena has prevented experimental access to these quantities so far. Here we report the observations of universal conductance fluctuations in ferromagnetic (Ga,Mn)As. The analysis of the length and temperature dependence of the fluctuations reveals a T-1 dependence of the dephasing time.

Item Type: Article
Uncontrolled Keywords: UNIVERSAL CONDUCTANCE FLUCTUATIONS; III-V SEMICONDUCTORS; MAGNETOTRANSPORT PROPERTIES; FERROMAGNETIC SEMICONDUCTORS; MAGNETIC-FIELD; METAL; TEMPERATURE; TRANSITION; TRANSPORT; EXCHANGE;
Subjects: 500 Science > 530 Physics
Divisions: Physics > Institute of Experimental and Applied Physics > Alumni or Retired Professors > Group Werner Wegscheider
Physics > Institute of Experimental and Applied Physics > Chair Professor Weiss > Group Dieter Weiss
Depositing User: Dr. Gernot Deinzer
Date Deposited: 08 Feb 2021 07:41
Last Modified: 08 Feb 2021 07:41
URI: https://pred.uni-regensburg.de/id/eprint/34178

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